Elevator.



N l -Y 0 798,927. PATENTED SEPT. 5, 190-5.

J. J. SGHWOB.

, BLEVATOR.

APPLIOATIN FILED. DEO. 27, 1904.

3 SHEETS-SHEET l.

No. 798,927. PATENTED SEPT. 5, 1905.

' J. J. SGHWOB.

ELEVATOR.

APPLIOATION FILED 1120.21, 1904.

a sums-snm: a.

.amm w M PATENTED SEPT. 5, 1905.

J. J. SGHWOB.

ELEVATOR.

APPLICATION FILED DB0. 27, 1904.

3 SHEETS-SHEET 3.

UNITED STATES JOHN J. SOHVOB, OF S'I. LOUIS, MISSOURI.

ELEVATOR.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application filed December 27,1904. Serial No. 238.286.

To (LIZ ndt/)711, t Tir/ay concern.-

Be it known that l, JOHN J. Seiiwo, a citi- I zen of the United States, and a resident of St. Louis,i\iissouri, have invented certain new and useful Improvements in Elevators, of which the following' is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, foriuing a part hereof.

My invention relates to improvements in elevators; and it consists of the novel features herein shown, described, and claimed.

In the drawings, Figure I is a perspective of an elevator-platform and elevator-shaft embodying' the principles of my invention. Fig. 2 is an enlarged detail elevation of the draft mechanism as seen looking in the direction indicated by the arrow Q in Fig'. 3. Fig. 3 is a horizontal section on the line 3 3 of Fig. 2 and looking upwardly, as indicated by the arrow. Fig. 4 is a cross-section on the line if 4 of Fig. 2 and looking' in the direction indicated by the arrow. Fig. 5 is a perspective illustrating the gate-latch. Fig. 6 is an inside elevation of the draft-operating mechanism upon an enlarged scale. Fig. T is an enlarged sectional detail on the line 7 7 of Fig. 6. Fig. S is an outside elevation of the draft-operating mechanism, said view being' the reverse of Fig. 6.

Referring to the drawings in detail, the elevator-posts l() and l1 travel up and down in the channel-bars l2 and I3 and carry the platform le. Above the floor the gate 16 is mounted to slide up and down in guideways at the corner-posts'lT and 18, said corner-posts forming` the front corners of the elevator-shaft and the posts I9 and 2O foi'ming' the rear corners of the elevator-shaft and the platform 14 fitting between the corner-posts 17, 18, 19, and 20. An upper channel-bar 21 is mounted between the post I8 and the channel-bar 13, and the lower channel-bar 22 is mounted belowand parallel with the upper channel-bar. The channels of the bars 21 and 22 are toward each other. The draft-block 23 is mounted between the channel-bars 21 and 2'2, there being a roller Zet at each corner of the draftblock, said rollers fitting' in the channels of the bars 2l and 22, so that the draft-block will run easily back and forth. Arms 25 and Q6 extend outwardly and downwardly from the draft-block 23 one upon each side of the channel-bar 99 and grooved pulleys 27 and ne, Q3 are mounted between the lowei' ends of said arms. An attaching-plate Q9 is secured to the channel-bar 13 and bearings 30 and 31 extend laterally from the attaching-plate. Groove-pulleys 32 and 33 and 34 are mounted between the bars and 31. A rope or cable 35 is attached to the gate I6, extends upwardly to the guide-roller 36, then laterally around the guide-roller 3T, then over the guide-roller 38, and downwardly to the counterweight 39, and the rope or cable extends downwardly from the connterweight 39, under the pulley 34, around the pulley 27, around the pulley 33, around the pulley 28, around the pulley 32 to the spring' el, and said spring is connected to the latch 4t2. An attaching-plate I3 is secured to one corner of the gate 16 and up- Y wardly-extending ratchet-teeth 44 are formed integral with the plate, said teeth being in position to be engaged by the tooth 45, cai'- ried by the latch '-LZ, and a spring' LI6 holds the latch yieldingly in position to engage the teeth LII.

A lug 47 projects inwardly from the center of the draft-block 23. A roller LIS is placed endwise against the lug 47, and the cap-screw 49 is inserted through thel roller and screwed into the lug to form a pintle for the roller, the head of the cap-screw being' recessed into the roller.

The spacing-brackets 50and 51 are attached to the post l1, and the means for operating' the gates is attached to these brackets, said means comprising a straightway 52; the camway 53, communicating with the ends of the straightway; the upper switch 54:, pivotally mounted in position to close the upper end of the straightway and open the end of the camway, and vice versa; the lowerswitch 55, pivotally mounted in position to close the lower end of the straightway and open the lower end of the camway, and vice versa; the crank 56 for operating the switch 54; the crank 57 for operating the switch 55; the lever 58, pivotally mounted; the rod 59, connecting one end of the lever 5S to the crank 56; the rod 60, connecting' thc crank 57 to the lever 58:* the foot-lever 6I, mounted upon the platform lei; the rope or cable 62, connected to thc footlever under the platform, running over the guide-roller 63 and upwardly to the lever 58, and the springs 64e upon the pivots of the switches 54 and 55, the tensions of said springs being exerted to hold the switches in their normal positions.

The elevator may be provided with a gate IOO 16 for each lfloor or landing. The counterwcight 39 should partly balance thesyeght.

of the gate. The spring 41 is intended to provide elasticity for the operating rope or cable, and the spring 46. must be strong enough to hold the latch 42 in engagement with the teeth 44 when the gate 16 is down way 52 and open the camway 53. Then as the elevator-car passes upwardly the roller 48 will pass into the camway, thereby moving' the draft-block 23, laterally pulling upon the rope or cable 40, overcoming the tension of the spring 46, pulling the latch 42 out of engagement with the teeth 44, and pulling' the gate 16 upwardly. The parts are so located that when the roller 48 is at the center of the camway the platform 14 will be on a level with the floor and the gate 16 will be at its highest limit. Then as the elevator-car passes downwardly or upwardly the gate will be closed and latched. In this way I produce an elevator that is half automatic with reference to the opening and closing of the gates. In other words, the gates are opened automatically at the`will of the operator.

If it is desired that every gate should open and close automatically as the car passes up or down without operating the foot-lever 61, the springs 64 must be adjusted to hold the switches 54 and 55 normally in position to close the ends of the straightway and open `the ends of the camway.

I claim- 1. In an elevator: the upper channel-bar 21 mounted horizontally; the lower channel-bar 22 mounted below and parallel with the upper channel-bar; the channels of said bars being toward each other; the draft-block 23 mounted between the channel-bars; the rollers 24 supporting' the draft-block; said rollers fitting in the channels; the arms 25 and 26 extending outwardly and downwardly from the draftblock; one upon each side of the lower channel-bar; the pulleys 27 and 28 mountedbetween the lower ends of the arms; the pulleys 32, 33 and 34 secured to the frame; a cable running over said pulleys; a gate, an elevatorplatform; and means for operating the draftblock as the platform passes up or down.

2. In an elevator: a draft-block mounted to move back` and forth horizontally; a pair of pulleys carried by the draft-block; three pulleys attached to the frame; a gate; a cable "tgached to the gate and extending over said pulleys; and a spring connecting the end of said cable to the frame.

3.V In an elevator: a gate; a rack upon the gate; a latch engaging the rack; a draft-block; pulleys secured to the frame; and a cable attached to the gate and extending over the pulleys and attached to the latch; and means for operating the draft-block.

4. In an elevator, a gate; a rack upon the gate; a latch engaging the rack; a draft-block; pulleys secured to the frame; and a cable attached to the gate and extending over the pulleys and attached to the latch; the straightway 52; the camway 53 communicating with the ends of the straightway; the upper switch 54 pivotally mounted in position to close the upper end of the straightway and open the upper end of the camway and Vice Versa; the lower switch pivotally mounted in position to close the lower end of the straightway and open the lower end of the camway and vice versa; an elevator-platform; and means for operating' the switches from the platform as the latter passes up or down.

5. In an elevator, a draft-block mounted to move back and forth horizontally; a pair of pulleys carried by the draft-block; three pulleys attached to the frame; a gate; a cable attached to the gate and extending over saidV pulleys; a spring connecting the end of said cable to the frame; the straightway 52; the camway 53 communicating with the ends of the straightway; the upper switch 54 pivotally mounted in position to close the upper end of the straightway and open the upper end of the camway and vice versa; the lower switch 55 pivotally mounted in position to close the lower end of the straightway and open the lower end of the camway; a connectionbetween the switches so that they will operate simultaneously; an elevator-platform; a footlever upon the said platform; and a connection between the foot-lever and the switches whereby the operator may throw the switches.

In testimony whereof I have signed my name to this specification in presence of two subscribing witnesses.

JOHN J. SGHW'OB. Witnesses:

ALFRED A. EIoKs, M. D. SoI-IULZE.

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